import pandas as pd
import numpy as np


def generate_signals(data, trend_lines, volume_threshold):
    """生成买卖信号"""
    signals = pd.DataFrame(index=data.index)
    signals['Signal'] = 0  # 0:无信号, 1:买入, -1:卖出

    # 趋势线突破信号
    if trend_lines['primary_down']:
        line = trend_lines['primary_down']
        dates = [i.toordinal() for i in data.index]
        trend_values = line['slope'] * np.array(dates) + line['intercept']
        signals.loc[data['Close'] > trend_values, 'Signal'] = 1

    if trend_lines['primary_up']:
        line = trend_lines['primary_up']
        dates = [i.toordinal() for i in data.index]
        trend_values = line['slope'] * np.array(dates) + line['intercept']
        signals.loc[data['Close'] < trend_values, 'Signal'] = -1

    # 高低点序列信号
    peaks = data[data['Primary_Peak']]
    valleys = data[data['Primary_Valley']]

    # 实现高低点信号逻辑...

    return signals
